Replace parseInt() with Number

Typescript guide recommends using Number() instead of parseInt
when radix is 10

Change-Id: I814ad5e5c2b092e7310b87e30be4069da1ce8998

polygerrit-ui/app/elements/core/gr-router/gr-router.ts

diff --git a/polygerrit-ui/app/elements/core/gr-router/gr-router.ts b/polygerrit-ui/app/elements/core/gr-router/gr-router.ts
index 94f0302..21ff4dc 100644
--- a/polygerrit-ui/app/elements/core/gr-router/gr-router.ts
+++ b/polygerrit-ui/app/elements/core/gr-router/gr-router.ts
@@ -728,7 +728,7 @@
     }
     return {
       leftSide: !!match[1],
-      lineNum: parseInt(match[2], 10),
+      lineNum: Number(match[2]),
     };
   }